Well u wanna track ur victim or want to get his ip, location, browser
settings, language or timings.... all u have to do is get his e-mail
Once u have it.
Go to www.readnotify.com
Once registered . . . send a mail to ur victim by the email id u registered at readnotify.com
But before sending the mail just add ".readnotify.com" with the victims id.. for firstname.lastname@example.org
and then send it...
when ever victim opens it his all the info will be mailed to u.
which can b very useful for the hackers.
Note = U can also change the settings in www.readnotify.com